Rocks

Types of Rocks Metamorphic Rocks Igneous Rocks Sedimentary Rocks

Sedimentary Rocks How They are Made Wind and water break down the earth Bits of earth settle in lakes and rivers Layers are formed and build up Pressure and time turn the layers to rock

Types of Sedimentary Rocks Sandstone Limestone Shale Conglomerate

Metamorphic Rocks What are They? Rocks that have changed They were once igneous or sedimentary Pressure and heat changed the rocks

Types of Metamorphic Rocks Schist Gneiss

Igneous Rocks What are They? Fire Rocks Formed underground by trapped, cooled magma Formed above ground when volcanoes erupt and magma cools

Types of Igneous Rocks Basalt Granite Pumice

Rocks Have Been Used For Many Years and For Many Things

Rocks

Rock group Formed Examples and locations Uses Igneous When lava or magma cooled and hardened in or on the crust Granite: Wicklow Mountains Basalt: Giants Causeway, Co. Antrim Granite: worktops Basalt: in tarmac to surface roads etc Sedimentary The compressed bits of plants, animals or other rocks Limestone: central plain of Ireland Sandstone: Comeragh mtns, Waterford/Cork Limestone: front of buildings, cement Sandstone: cement blocks Metamorphic Other rocks changed by heat or pressure Marble: Co.Kilkenny Quartzite: Mt. Errigal, Donegal Marble: fireplaces and headstones Quartz: jewellery and road surfaces